4 Input 4 Output 3.5Mm Audio Switch Box, Aux Switcher, Stereo Audio Selector Box, Line Router Splitter Combiner For Home Audio

Features: 4-In 4-Out (Switch Audio Sources Input) (1) Switch Different Input Or Output Conveniently (2) No Need Power Supply, Plug And Play Directly (3) Circuit Design Does Not Affect Sound Quality (4) Made Of Fr4 Pcb Circuit Board (4) Mini Size Compact Audio Splitter For Home Audio Applications: Connect Sockets Are Aux 1/8'' (3.5Mm) Input Connections: Computer / Phone / Music Player. Etc. Output Connections: Active Speaker / Headphone Amp / Power Amplifier. Etc. Use Instruction: Left Knob On Top: For Switch/Select Input Signal Way Right Knob On Top: For Switch/Select Output Signal Way